MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Stop


Vendor detections: 17


Intelligence 17 IOCs YARA 27 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c
SHA3-384 hash: 6864f9024b6af7a11b86d29c36c40b0eea271c95285a419b057d2a0b42e9447294a175c2536d471a44354aab4d7e5997
SHA1 hash: f61f07d60704ff3d843596a6068b12f565bbed23
MD5 hash: 19f46c713419f534c1532645b764c7b4
humanhash: autumn-delaware-blossom-table
File name:19f46c713419f534c1532645b764c7b4.exe
Download: download sample
Signature Stop
Create hunting rule
File size:781'824 bytes
First seen:2024-04-24 15:45:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 7a859eb45559cc02e871ff551b10175d (2 x Stop)
ssdeep 12288:Ck30NbksICSr1WWknJ7RHWaqrx3A4VpRZZTLpu02zSa8wQR1oFqVDNmw/oI9wIG:kksIjr1EJ7R2aqN3zbFTM02zFW1TDLiz
Threatray 1'886 similar samples on MalwareBazaar
TLSH T138F412027DE198B4E6E3C2714821B961C67BFD715AF18E27739C654E3A740C08A8DBB7
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon 0a01030504101200 (1 x Stop)
Reporter abuse_ch
Tags:exe Stop


Avatar
abuse_ch
Stop C2:
http://cajgtus.com/test1/get.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
411
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
stop
Create hunting rule
ID:
1
File name:
8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c.exe
Verdict:
Malicious activity
Analysis date:
2024-04-24 15:47:51 UTC
Tags:
loader vodkagats djvu ransomware stop
Link:
https://app.any.run/tasks/23a45fa6-a733-4f5c-8ae6-eda6116cf1de

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Sending a TCP request to an infection source
Creating a file
Launching a process
Creating a process with a hidden window
Adding an access-denied ACE
Сreating synchronization primitives
Deleting a recently created file
Query of malicious DNS domain
Connection attempt to an infection source
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
fingerprint packed
Link:
https://www.filescan.io/uploads/6629293ac5dabc22b20737b4/reports/22efb051-27d4-4830-b088-46dc419e6340/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
STOP Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/560d14c3-8b53-425d-86b5-024b1e8de4c3
Result
Threat name:
Babuk, Djvu, Vidar
Create hunting rule
Detection:
malicious
Classification:
rans.spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1431226
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Found ransom note / readme
Infects executable files (exe, dll, sys, html)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Writes a notice file (html or txt) to demand a ransom
Writes many files with high entropy
Yara detected AntiVM3
Yara detected Babuk Ransomware
Yara detected Djvu Ransomware
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1431226 Sample: n8XBpFdVFU.exe Startdate: 24/04/2024 Architecture: WINDOWS Score: 100 69 sdfjhuz.com 2->69 71 cajgtus.com 2->71 73 2 other IPs or domains 2->73 85 Snort IDS alert for network traffic 2->85 87 Found malware configuration 2->87 89 Malicious sample detected (through community Yara rule) 2->89 91 10 other signatures 2->91 11 n8XBpFdVFU.exe 2->11         started        14 n8XBpFdVFU.exe 2->14         started        16 n8XBpFdVFU.exe 2->16         started        18 n8XBpFdVFU.exe 2->18         started        signatures3 process4 signatures5 105 Detected unpacking (changes PE section rights) 11->105 107 Detected unpacking (overwrites its own PE header) 11->107 109 Writes a notice file (html or txt) to demand a ransom 11->109 119 2 other signatures 11->119 20 n8XBpFdVFU.exe 1 16 11->20         started        111 Antivirus detection for dropped file 14->111 113 Multi AV Scanner detection for dropped file 14->113 115 Machine Learning detection for dropped file 14->115 24 n8XBpFdVFU.exe 14->24         started        117 Injects a PE file into a foreign processes 16->117 27 n8XBpFdVFU.exe 16->27         started        29 n8XBpFdVFU.exe 18->29         started        process6 dnsIp7 75 api.2ip.ua 172.67.139.220, 443, 49730, 49731 CLOUDFLARENETUS United States 20->75 49 C:\Users\user\AppData\...\n8XBpFdVFU.exe, PE32 20->49 dropped 31 n8XBpFdVFU.exe 20->31         started        34 icacls.exe 20->34         started        51 C:\Users\user\_README.txt, ASCII 24->51 dropped 53 C:\Users\user\Desktop\...\KATAXZVCPS.mp3, data 24->53 dropped 55 C:\Users\user\AppData\Local\...\_README.txt, ASCII 24->55 dropped 99 Modifies existing user documents (likely ransomware behavior) 24->99 file8 signatures9 process10 signatures11 125 Injects a PE file into a foreign processes 31->125 36 n8XBpFdVFU.exe 1 25 31->36         started        process12 dnsIp13 77 sdfjhuz.com 175.119.10.231, 49733, 80 SKB-ASSKBroadbandCoLtdKR Korea Republic of 36->77 79 cajgtus.com 211.119.84.111, 49734, 49735, 49736 LGDACOMLGDACOMCorporationKR Korea Republic of 36->79 57 C:\_README.txt, ASCII 36->57 dropped 59 C:\Users\user\...\acroNGLLog.txt.bgjs (copy), data 36->59 dropped 61 C:\Users\...\userdict_v1.0809.dat.bgjs (copy), data 36->61 dropped 63 64 other malicious files 36->63 dropped 93 Tries to harvest and steal browser information (history, passwords, etc) 36->93 95 Infects executable files (exe, dll, sys, html) 36->95 97 Modifies existing user documents (likely ransomware behavior) 36->97 41 build2.exe 36->41         started        file14 signatures15 process16 signatures17 101 Writes many files with high entropy 41->101 103 Injects a PE file into a foreign processes 41->103 44 build2.exe 41->44         started        process18 dnsIp19 81 95.217.9.149, 443, 49738, 49740 HETZNER-ASDE Germany 44->81 83 steamcommunity.com 96.17.209.196, 443, 49737 AKAMAI-ASUS United States 44->83 65 C:\Users\user\AppData\Local\...\sqln[1].dll, PE32 44->65 dropped 67 C:\Users\user\...\76561199673019888[1].htm, data 44->67 dropped 121 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 44->121 123 Tries to harvest and steal browser information (history, passwords, etc) 44->123 file20 signatures21
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c/
Threat name:
Win32.Backdoor.Mokes
Create hunting rule
Status:
Malicious
First seen:
2024-04-24 15:46:05 UTC
File Type:
PE (Exe)
Extracted files:
30
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rn4fdlryh3s6duiggixztufgcsiejyyx5uyqzz2gj735qkx2ojoa._file
Verdict:
malicious
Similar samples:
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Stop
53193f424f55572d6c57e1efc0d9afbce1fb8d2e09de0669bc230c34dccd330d
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651bf6dc2ce11fbbda045ac186ab58ac3d691f8d28dc811f2b1552fe74b275cc
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6c0bd6cae657449a07dcb78940ea732d7e4e24546477b083116bff4c99bd417d
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+ 1'876 additional samples on MalwareBazaar
Result
Malware family:
djvu
Create hunting rule
Score:
  10/10
Tags:
family:djvu discovery persistence ransomware
Link:
https://tria.ge/reports/240424-s7lzfscg4v/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Modifies file permissions
Detected Djvu ransomware
Djvu Ransomware
Malware Config
C2 Extraction:
http://cajgtus.com/test1/get.php
Unpacked files
SH256 hash:
28e1c285437437f28462bb73d77b4e64f2f4afd68c3618641f6b593c3b2b4bea
MD5 hash:
4d24b5da9e5c17259cfd517ac4529554
SHA1 hash:
d4ba9d60da54944dfabdd9e9dc6cc35535affdb3
Detections:
djvu_ransomware
Create hunting rule
win_stop_auto
Create hunting rule
SUSP_XORed_URL_In_EXE
Create hunting rule
MALWARE_Win_STOP
Create hunting rule
Link:
https://www.unpac.me/results/a269f239-ab36-4955-9720-44c0e9751595/
Parent samples :
946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48
455f4327f9c1e07dec6538bce0edb0b935ad485e0f01cea4e68fa950b42891a2
6c0bd6cae657449a07dcb78940ea732d7e4e24546477b083116bff4c99bd417d
8e53393db26258fb917fd570861070420d31148c2826dcdbed52ce326c2d5ff6
444cf71032e7c7be2a79255af4fb38bab0333fb0a060ecc3fe91473d26ebce83
62623bddab0911eca4cd33135383761dbcf6f22a480eda9761becf638f1c4546
9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0
8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c
6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239
SH256 hash:
8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c
MD5 hash:
19f46c713419f534c1532645b764c7b4
SHA1 hash:
f61f07d60704ff3d843596a6068b12f565bbed23
Link:
https://www.unpac.me/results/a269f239-ab36-4955-9720-44c0e9751595/
Malware family:
STOP
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8b7851ae383e/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:Check_Dlls
Create hunting rule
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:EXE_Stealer_StealC_Feb2024
Create hunting rule
Author:Yashraj Solanki - Cyber Threat Intelligence Analyst at Bridewell
Rule name:has_telegram_urls
Create hunting rule
Author:Aaron DeVera<aaron@backchannel.re>
Description:Detects Telegram URLs
Rule name:INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
Create hunting rule
Author:ditekSHen
Description:Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.
Rule name:INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs
Create hunting rule
Author:ditekSHen
Description:Detect binaries embedding considerable number of MFA browser extension IDs.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MALWARE_Win_STOP
Create hunting rule
Author:ditekSHen
Description:Detects STOP ransomware
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:QbotStuff
Create hunting rule
Author:anonymous
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:SUSP_XORed_URL_In_EXE
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:SUSP_XORed_URL_in_EXE_RID2E46
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:Windows_Ransomware_Stop_1e8d48ff
Create hunting rule
Author:Elastic Security
Rule name:win_stop_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.stop.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Stop

Executable exe 8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2794529/
  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetVolumeInformationW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleInputA
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleAliasesA
KERNEL32.dll::GetConsoleProcessList
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateHardLinkA
KERNEL32.dll::CreateFileW
KERNEL32.dll::GetWindowsDirectoryA
KERNEL32.dll::RemoveDirectoryW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
WIN_HTTP_APIUses HTTP servicesWINHTTP.dll::WinHttpOpen

Comments